Grasshoppers of Wyoming and the West
Entomology
Finned Grasshopper
Trachyrhachys aspera Scudder
Fig. 1, First instar Body Length 5.1-5.7 mm, Femur Length 2.9-3.2 mm, Antennal Segments 12.
Fig. 2, Second instar BL 5.7-6.5 mm, FL 3.7-4.3 mm, AS 14-15.
Fig. 3, Third Instar BL 7.5-9 mm, FL 4.4-4.5 mm, AS 16-17.
Fig. 4, Fourth Instar BL 9-11 mm, FL 5.7-7 mm, AS 17-18.
Fig. 5, Fifth Instar Male BL 13 mm, FL 8-8.5 mm, AS 20;
Female BL 16.7-17 mm, FL 8.7-8.8 mm, AS 19-20.
Fig. 10, Trachyrhachys aspera clutch of eggs.
Nymphs of Next Species in Subfamily: Trachyrhachys kiowa
Nymphs of Previous Species in Subfamily: Spharagemon equale
